[PATCH AUTOSEL for 3.18 07/59] Input: i8042 - add TUXEDO BU1406 (N24_25BU) to the nomux list

From: alexander . levin
Date: Thu Dec 07 2017 - 11:18:57 EST


From: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>

[ Upstream commit a4c2a13129f7c5bcf81704c06851601593303fd5 ]

TUXEDO BU1406 does not implement active multiplexing mode properly,
and takes around 550 ms in i8042_set_mux_mode(). Given that the
device does not have external AUX port, there is no downside in
disabling the MUX mode.

Reported-by: Paul Menzel <pmenzel@xxxxxxxxxxxxx>
Suggested-by: Vojtech Pavlik <vojtech@xxxxxxx>
Reviewed-by: Marcos Paulo de Souza <marcos.souza.org@xxxxxxxxx>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx>
---
drivers/input/serio/i8042-x86ia64io.h | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/drivers/input/serio/i8042-x86ia64io.h b/drivers/input/serio/i8042-x86ia64io.h
index 3f9ad6414c1b..7ddf667729e3 100644
--- a/drivers/input/serio/i8042-x86ia64io.h
+++ b/drivers/input/serio/i8042-x86ia64io.h
@@ -514,6 +514,13 @@ static const struct dmi_system_id __initconst i8042_dmi_nomux_table[] = {
DMI_MATCH(DMI_PRODUCT_NAME, "IC4I"),
},
},
+ {
+ /* TUXEDO BU1406 */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Notebook"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "N24_25BU"),
+ },
+ },
{ }
};

--
2.11.0